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PanelDue - 7 inch - sparkle sparkle

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Duet Hardware and wiring
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  • undefined
    croadfeldt
    last edited by 9 Oct 2016, 07:56

    https://www.youtube.com/watch?v=2gF1jXiDl5s

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    • undefined
      dc42 administrators
      last edited by 9 Oct 2016, 09:28

      Do you have 12V/24V power applied to the Duet WiFi? The backlight on the 7" display draws a lot of current, and when operating on USB power only, it's not unusual to see issues with display quality.

      Duet WiFi hardware designer and firmware engineer
      Please do not ask me for Duet support via PM or email, use the forum
      http://www.escher3d.com, https://miscsolutions.wordpress.com

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      • undefined
        croadfeldt
        last edited by 9 Oct 2016, 11:04

        There's a 12 volt ATX connected. I'm using the 5 volt constant supply from the ATX for the 5 volt supply on the DuetWifi. I moved the jumper for 5 volt on the DuetWifi to use external 5 volt. When I physically turn the ATX supply off and run off USB 5 volt, I see a lot more issues.

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        • undefined
          dc42 administrators
          last edited by 9 Oct 2016, 11:30

          Looks to me like a faulty display panel then. The pixel clock doesn't appear to be properly synchronised.

          Duet WiFi hardware designer and firmware engineer
          Please do not ask me for Duet support via PM or email, use the forum
          http://www.escher3d.com, https://miscsolutions.wordpress.com

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          • undefined
            ShadowX
            last edited by 10 Sept 2016, 13:09 9 Oct 2016, 13:04

            Could be picking up electrical noise. You tried adding some ferrite beads to the power connections inside the panel?

            On way to test if its a noisy power connection is to remove the PanelDue from the 3D printer and plugging it directly to your usb cable (with ferrite on cable) and see if you still have the same problem. I had some electrical noise gremlins on my old controller that was fixed by adding ferrite beads.

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            • undefined
              bot
              last edited by 9 Oct 2016, 18:22

              If you are using 5v from the atx supply, check the current rating. IIRC my atx supply does not provide a lot of current over any of the 5v circuits.

              *not actually a robot

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              • undefined
                croadfeldt
                last edited by 9 Oct 2016, 18:45

                Well to try to isolate all those suggestions, I've done the following. The issue follows the display regardless of connection or wiring.

                Connected to PC via KVMU switch: Brief 1-2 second moment of clear graphics, then sparkle.
                Connected to self powered Anker USB 3 HUB with a 4 or 5 AMP supply: Sparkle
                Connected to MBP USB 3: Sparkle
                Connected to DuetWifi via 4 PIN wire: Sparkle

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                • undefined
                  croadfeldt
                  last edited by 9 Oct 2016, 21:07

                  Thanks folks, I will have a chat with the filastruder folks on exchanging the panel.

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                  • undefined
                    croadfeldt
                    last edited by 12 Oct 2016, 22:44

                    Received replacement today, Works perfect. Thanks Tim and Dave!

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                    • undefined
                      elmoret
                      last edited by 13 Oct 2016, 03:41

                      Excellent, thanks for the update!

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